Marine Interpretation Message
Issued by NWS

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AGPN40 KWNM 032112
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
212 PM PDT TUE MAY 3 2016

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

AT 18Z A HIGH PRES RIDGE WAS OVER THE WA/OR WATERS AND SRN CA
WATERS. A STATIONARY FRONT WAS LOCATED ACROSS THE NRN/CENTRAL CA
WATERS. 12Z GLOBAL GUIDANCE FOR THE MOST PART WAS IN AGREEMENT
OVER THE FORECAST PERIOD SO FAVORED 12Z GFS THROUGH SAT 12Z W/A
50/50 BLEND OF THE 12Z GFS/ECMWF SAT 15Z THROUGH SUN 12Z BEFORE
RETURNING TO SOLE USE OF THE 12Z GFS SUN 15Z THROUGH THE END OF
THE PERIOD. ONE BIG CHANGE TO THE FORECAST WAS TO EXPAND AND
INTRODUCE GALES EARLIER OVER PARTS OFF THE OFFSHORE CA WATERS. NOW
HAVE GALES BEGINNING WED NIGHT AND EXPANDING FARTHER W AND SW TO
COVER MORE OF THE OFFSHORE CA WATERS THAN BEFORE AND LASTING INTO
FRI NIGHT COMPARED TO FRI IN THE PRIOR FORECAST. THIS IS PER
LATEST 12Z GFS AND NOW 12Z ECMWF/UKMET WHICH BOTH DEPICT 30 KT
WINDS OVERSPREADING THE NRN CA OFFSHORE WATERS WED NIGHT AS WELL
AS A LOW PRES TROUGH STRENGTHENS ALONG THE NRN CA COAST WHILE HIGH
PRES CONTINUES TO BUILD IN FROM THE W. BY SAT WINDS EASE BELOW
WARNING CRITERIA OVER THE NRN CA WATERS AS THE LOW PRES TROUGH
WEAKENS AS DOES THE HIGH TO THE W.

.SEAS...FAVORED 12Z NWW3 OVER PERIOD EXCEPT USED A 50/50 BLEND OF
THE 12Z NWW3/ECMWF WAM SAT 15Z THROUGH SUN 12Z PER 50/50 BLEND OF
12Z GFS/ECMWF WINDS FOR THAT TIME PERIOD.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A.


.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
.PZZ815...NONE.

.PZ6 CALIFORNIA WATERS...
.PZZ820...INNER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE WED NIGHT INTO THU.
     GALE POSSIBLE THU NIGHT INTO FRI NIGHT.
.PZZ920...OUTER WATERS FROM POINT ST. GEORGE TO POINT ARENA...
     GALE POSSIBLE FRI.
.PZZ825...INNER WATERS FROM POINT ARENA TO PIGEON POINT...
     GALE THU.
     GALE POSSIBLE FRI.
.PZZ925...OUTER WATERS FROM POINT ARENA TO PIGEON POINT...
     GALE POSSIBLE FRI.

$$

.FORECASTER HOLLEY. OCEAN PREDICTION CENTER.



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